From: lkcl <lkcl@web>
Date: Tue, 15 Dec 2020 21:04:08 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~1308
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2eb8770a0c158e72a6d44b91bb028f97e9fc8613;p=libreriscv.git

---

diff --git a/openpower/sv/svp_rewrite/svp64/discussion.mdwn b/openpower/sv/svp_rewrite/svp64/discussion.mdwn
index f8e279851..dd5951abb 100644
--- a/openpower/sv/svp_rewrite/svp64/discussion.mdwn
+++ b/openpower/sv/svp_rewrite/svp64/discussion.mdwn
@@ -174,13 +174,15 @@ When there are 3 bits it would be possible to indicate whether to begin from a p
 
 Note: considerable care needs to be taken when putting these horiz/vertical CRs through the Dependency Matrices
 
+Indexing algorithm illustrating how the H/V modes would work.  Note that BA is the 3 bit CR register field that normsll, in scalar ISA, would reference only CR0-7 as CR[BA].
+
      for i in range(VL)
          y = i % 8
          x = i // 8
          if verticalmode:
              CRINDEX = BA + y*8 + x
          else:
-             CRINDEX = BA*8 i
+             CRINDEX = BA*8 + i
          CR[CRINDEX] = ...